과제#4 코드리뷰 부탁드립니다.

Post.py

@@ -0,0 +1,15 @@
+from time import gmtime, strftime
+
+class Post() :
+    index = 1
+    def __init__(self, context, user_name):
+        self.index = Post.index
+        self.removed = False
+        self.context = context
+        self.time = strftime("%Y-%m-%d %H:%M", gmtime())
+        self.user_name = user_name
+        Post.index += 1
+
+    def show(self):
+        if self.removed == False:
+            print('{:^8} | {:60.60} | {} | {}'.format(self.index, self.context, self.user_name, self.time))

User.py

@@ -0,0 +1,4 @@
+class User():
+    def __init__(self, id, password):
+        self.id = id
+        self.password = password

광일공방 중고나라#4.py

@@ -0,0 +1,207 @@
+from time import gmtime, strftime
+import os
+import pickle
+from Post import Post
+from User import User
+
+
+def autosave(func):
+    def decorated(caller, *args, **kwargs):
+        func(caller, *args, **kwargs)
+        caller.save()
+
+    return decorated
+
+
+class Board():
+    posts_per_page = 15
+
+    def __init__(self):
+        # 게시글 데이터 세팅
+        try:
+            self.load()
+            Post.index = self.posts[0].index + 1
+        except:
+            self.posts = []
+
+        # 유저 데이터 세팅
+        try:
+            self.load_user_data()
+        except:
+            self.user_data = []
+
+        # 로그인 접속 유저 정보
+        self.user_name = str
+        self.user_index = int
+
+        self.intro()
+
+        self.login_action = [self.login, self.join]
+        self.user_action = [self.write, self.edit, self.delete, self.save, self.previous_page, self.next_page]
+        self.page_num = 1
+
+    #######################
+    ######## 로그인 ########
+    #######################
+
+    def login_menu(self):
+        print("--------------------------------------------------")
+        print("1. 로그인")
+        print("2. 회원가입")
+        print("--------------------------------------------------")
+        select_menu_num = int(input("> "))
+        return select_menu_num
+
+    def login_act(self, select_menu_num):
+        self.login_action[select_menu_num - 1]()
+
+    def login(self):
+        id = input("아이디 : ")
+        password = input("비밀번호 : ")
+        try:
+            self.user_index = self.user_find(id, password)
+            print("로그인 성공 : 환영합니다 {}님!".format(id))
+            self.user_name = id
+
+        except:
+            print("로그인에 실패하셨습니다")
+            select_menu_num = self.login_menu()
+            self.login_act(select_menu_num)
+
+    def join(self):
+        id = input("아이디 : ")
+        password = input("비밀번호 : ")
+        self.user_data.append(User(id, password))
+        print("로그인 성공 : 환영합니다 {}님!".format(id))
+        self.user_index = self.user_find(id, password)
+        self.user_name = id
+        self.save_user_data()
+
+    def user_find(self, id, password):
+        for user_index, user in enumerate(self.user_data):
+            if (user.id == id) & (user.password == password):
+                return user_index
+
+    def save_user_data(self):
+        pickle.dump(self.user_data, open("user_data.pickle", "wb"))
+
+    def load_user_data(self):
+        self.user_data = pickle.load(open("user_data.pickle", "rb"))
+
+    #####################
+    ######## 시작 #######
+    #####################
+
+    def intro(self):
+        print("""본 프로그램은 광일공방에서 중고거래 사이트를 기웃기웃 거리던
+              광일이가 어느날 삘이 꽂혀 '아! 여기가 돈 나오는 방석이다!' 
+              생각하자마자 아주 급하게 만들어낸 불안정한 중고거래 사이트입니다.
+              물론 아직은 허접한 게시판이지만 1000만 사용자를 꿈꾸는 광일이는 
+              커다란 희망의 씨앗을 마음에 품고서 오늘도 밤을 지새우며 코드를 작성합니다.""")
+
+        n = input('프로그램을 시작하시려면 로그인하세요.')
+        if n != '':
+            print("프로그램을 종료합니다")
+            exit()
+
+    #######################
+    ####### 메인메뉴 #######
+    #######################
+
+    def main_menu(self):
+        print("--------------------------------------------------")
+        print("1. 작성하기")
+        print("2. 수정하기")
+        print("3. 삭제하기")
+        print("4. 저장하기")
+        print("5. 이전 페이지로")
+        print("6. 다음 페이지로")
+        print("--------------------------------------------------")
+        select_menu_num = int(input("> "))
+        return select_menu_num
+
+    def show(self):
+        if len(self.posts) == 0:
+            print("게시판에 아직 작성된 글이 없습니다.")
+            print("한번 작성해보는것은 어떨까요?")
+            print("--------------------------------------------------")
+            return
+
+        page_from = (self.page_num - 1) * Board.posts_per_page
+        page_to = self.page_num * Board.posts_per_page
+        for post in self.posts[page_from: page_to]:
+            post.show()
+        print("--------------------------------------------------")
+
+    def user_act(self, select_menu_num):
+        self.user_action[select_menu_num - 1]()
+
+    def next_page(self):
+        if self.page_num > 1:
+            self.page_num -= 1
+
+    def previous_page(self):
+        if self.page_num * Board.posts_per_page < len(self.posts):
+            self.page_num += 1
+
+    def user_authorization(self, post):
+        if self.user_data[self.user_index].id == post.user_name:
+            return
+        print("게시글 접근 권한이 없습니다.")
+        return
+
+    @autosave
+    def write(self):
+        context = input("작성 > ")
+        self.posts.insert(0, Post(context, self.user_name))
+        print(str(self.posts[len(self.posts) - 1].index) + "번째 글이 성공적으로 작성되었습니다.")
+
+    @autosave
+    def edit(self):
+        try:
+            revise_num = int(input("몇 번 글을 수정할까요? "))
+            _, post = self.find(revise_num)
+            self.user_authorization(post)
+            revise_context = input("수정 > ")
+            post.context = revise_context
+        except:
+            print("잘못된 게시글 번호를 입력하셨습니다.")
+
+    @autosave
+    def delete(self):
+        try:
+            delete_num = int(input("몇 번 글을 지울까요? "))
+            index, post = self.find(delete_num)
+            self.user_authorization(post)
+            self.posts[index].removed = True
+        except:
+            print("잘못된 게시글 번호를 입력하셨습니다.")
+
+    def find(self, num):
+        for index, post in enumerate(self.posts):
+            if post.index == num:
+                return index, post
+
+    def load(self):
+        self.posts = pickle.load(open("posts.pickle", "rb"))
+
+    def save(self):
+        pickle.dump(self.posts, open("posts.pickle", "wb"))
+
+
+def clear_screen():
+    os.system('cls' if os.name == 'nt' else 'clear')
+
+
+if __name__ == "__main__":
+    clear_screen()
+    board = Board()
+
+    select_menu_num = board.login_menu()
+    board.login_act(select_menu_num)
+
+    while True:
+        clear_screen()
+        board.show()
+        select_menu_num = board.main_menu()
+        board.user_act(select_menu_num)